考虑多工作模式的链式混合储能系统广义等效模型及荷电状态估计技术研究
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摘要
作为储能系统的一种新型结构,链式储能系统具有高效率、高可靠性和高电能质量的特点。然而,多储能元件与多电力电子变换器耦合使得链式储能系统的建模和荷电状态的准确估计较为困难。该文以链式混合储能系统为研究对象,基于链式混合储能系统的3种工作模式及混合调制方法,建立链式混合储能系统的广义等效模型,进而提出以等效调制度为核心思想的链式混合储能系统荷电状态(stateof charge,SOC)估计方法,以等效SOC(equivalentstateof charge,ESOC)指标描述不同工作模式下的混合储能系统荷电状态。在Matlab/Simulink中搭建等效电路模型,对不同工作模式下的ESOC指标估计的效果进行仿真分析。
As a new topology of energy storage system, the cascaded energy storage system has the characteristics of high efficiency, high reliability and high power quality. However, it is difficult to model the cascaded energy storage system and estimate the state of charge(SOC) accurately because of the coupling of multi-energy storage components and multi-power electronic converters. The cascaded hybrid energy storage system was selected as the research object. A generalized equivalent model of cascaded hybrid energy storage system was built based on the three operating modes and the hybrid modulation method of cascaded hybrid energy storage system. As the core factor of state estimation, equivalent modulation depth was introduced. And then the index of equivalent state of charge(ESOC) was put forward to describe hybrid energy storage system under different operating conditions. The equivalent circuit model and the generalized equivalent model were built in Matlab/Simulink. At last, the effect of ESOC index under different operating modes was simulated and analyzed.
As a new topology of energy storage system, the cascaded energy storage system has the characteristics of high efficiency, high reliability and high power quality. However, it is difficult to model the cascaded energy storage system and estimate the state of charge(SOC) accurately because of the coupling of multi-energy storage components and multi-power electronic converters. The cascaded hybrid energy storage system was selected as the research object. A generalized equivalent model of cascaded hybrid energy storage system was built based on the three operating modes and the hybrid modulation method of cascaded hybrid energy storage system. As the core factor of state estimation, equivalent modulation depth was introduced. And then the index of equivalent state of charge(ESOC) was put forward to describe hybrid energy storage system under different operating conditions. The equivalent circuit model and the generalized equivalent model were built in Matlab/Simulink. At last, the effect of ESOC index under different operating modes was simulated and analyzed.
引文
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[25]李欣然,徐婷婷,谭绍杰,等.超级电容储能系统动态综合等效模型[J].系统仿真学报,2016,28(04):783-792,799.Li Xinran,Xu Tingting,Tan Shaojie,et al.Integrated dynamic equivalent model of super capacitor energy storage system[J].Journal of System Simulation,2016,28(04):783-792,799(in Chinese).
[2]Simoes M G,Roche R,Kyriakides E,et al.Smart-grid technologies and progress in Europe and the USA[C]//Proceedings of IEEE Conference on Energy Conversion Congress&Exposition,Phoenix,USA,2011.
[3]Zhou Haihua,Tanmoy Bhattacharya,Duong Tran,et al.Composite energy storage system involving battery and ultracapacitor with dynamic energy management in microgrid applications[J].IEEE Transactions on Power Electronics,2011,26(3):923-930.
[4]Jiang Wei,Liu Kai,Hu Renjie,et al.Novel modeling and design of a dual half bridge DC-DC converter applied in supercapacitor energy storage system[J].Electric Power Components and Systems,2014,42(13):1398-1408.
[5]Jiang Wei,Hu Renjie,Chen Wu,et al.Improved performance of a DC/DC converter for supercapacitor energy storage system[C]//Proceedings of IEEEConference on Energy Conversion Congress&Exposition,Denver,USA,2013.
[6]韩晓娟,程成,籍天明,等.计及电池使用寿命的混合储能系统容量优化模型[J].中国电机工程学报,2013,33(34):91-97.Han Xiaojuan,Cheng Cheng,Ji Tianming,et al.Capacity optimal modeling of hybrid energy storage systems considering battery life[J].Proceedings of the CSEE,2013,33(34):91-97(in Chinese).
[7]Choi Mid-Eum,Kim Seong-Woo,Seo Seung-Woo.Energy management optimization in a battery/supercapacitor hybrid energy storage system[J].IEEETransactions on Smart Grid,2012,3(1):463-472.
[8]Wang P,Jin C,Zhu D,et al.Distributed control for autonomous operation of a three-port AC/DC/DS hybrid microgrid[J].IEEE Transactions on Industrial Electronics,2015,62(2):1279-1290.
[9]毛苏闽,蔡旭.大容量链式电池储能功率调节系统控制策略[J].电网技术,2012,36(9):226-231.Mao Sumin,Cai Xu.Control strategy for power conditioning system of large capacity cascaded battery energy storage system[J].Power System Technology,2012,36(9):226-231(in Chinese).
[10]Hatano N,Ise T.Control scheme of cascaded H-bridge STATCOM using zero-sequence voltage and negativesequence current[J].IEEE Transactions on Power Delivery,2010,25(2):543-550.
[11]丘东元,张波,潘虹.级联型多电平变换器一般构成方式及原则研究.电工技术学报,2005,20(3):24-35.Qiu Dongyuan,Zhang Bo,Pan Hong.Study on composing methods of cascade multilevel converter[J].Transactions of China Electrotechnical Society,2005,20(3):24-35(in Chinese).
[12]丁凯.混合多电平逆变器拓扑及其调制方法研究[D].武汉:华中科技大学,2004.Ding Kai.Research on topology and modulation method for hybrid multilevel inverter[D].Wuhan:Huazhong University of Science&Technology,2004(in Chinese).
[13]李和明,王毅,石新春,等.混合级联型多电平变频器拓扑结构研究.中国电机工程学报,2006,26(2):127-132.Li Heming,Wang Yi,Shi Xinchun,et al.Research on the topology of hybrid cascaded multilevel converters[J].Proceedings of the CSEE,2006,26(2):127-132(in Chinese).
[14]Krastevm I,Mukherjee N,Tricoli P,et al.New modular hybrid energy storage system and its control strategy for a fuel cell locomotive[C]//Conference on Power Electronics and Applications.Geneva,Switzerland,2015:1-10.
[15]Mukherjee N,Strickland D.Control of second-life hybrid battery energy storage system based on modular boost-multilevel buck converter[J].IEEE Transactions on Industrial Electronics,2015,62(2):1-1.
[16]孙冬,陈息坤.基于离散滑模观测器的锂电池荷电状态估计[J].中国电机工程学报,2015,35(1):185-191.Sun Dong,Chen Xikun.Charge State Estimation of li-ion batteries based on discrete-time sliding mode observers[J].Proceedings of the CSEE,2015,35(1):185-191(in Chinese).
[17]魏克新,陈峭岩.基于多模型自适应卡尔曼滤波器的电动汽车电池荷电状态估计[J].中国电机工程学报,2012,32(31):19-26,214.Wei Kexin,Chen Qiaoyan.Electric vehicle battery SOCestimation based on multiple-model adaptive Kalman filter[J].Proceedings of the CSEE,2012,32(31):19-26,214(in Chinese).
[18]尹其林.基于粒子群算法的电动汽车混合储能系统能量管理策略研究[D].武汉:湖北工业大学,2016.Yin Qilin.Study on EV hybrid energy storage system energy management strategy based on particle swarm optimization[D].Wuhan:Hubei University of Technology,2016(in Chinese).
[19]Mesbahi T,Rizoug N,Khenfri F,et al.Dynamical modelling and emulation of Li-ion batteriessupercapacitors hybrid power supply for electric vehicle applications[J].IET Electrical Systems in Transportation,2017,7(2):161-169.
[20]王玲,李欣然,马亚辉,等.燃料电池发电系统的机电动态模型[J].中国电机工程学报,2011,31(22):40-47.Wang Ling,Li Xinran,Ma Yahui,et al.Dynamic model of fuel cell power generating system[J].Proceedings of the CSEE,2011,31(22):40-47(in Chinese).
[21]Liu L,Li H,Hwang S H,et al.An Energy-efficient motor drive with autonomous power regenerative control system based on cascaded multilevel inverters and segmented energy storage[J].IEEE Transactions on Industry Applications,2013,49(1):178-188.
[22]丁明,林根德,陈自年,等.一种适用于混合储能系统的控制策略[J].中国电机工程学报,2012,32(7):1-6.Ding Ming,Lin Gende,Chen Zinian,et al.A control strategy for hybrid energy storage system[J].Proceedings of the CSEE,2012,32(7):1-6(in Chinese).
[23]丁明,吴建锋,朱承治,等.具备荷电状态调节功能的储能系统实时平滑控制策略[J].中国电机工程学报,2013,33(1):22-29.Ding Ming,Wu Jianfeng,Zhu Chengzhi,et al.A real-time smoothing control strategy with SOC adjustment function of storage systems[J].Proceedings of the CSEE,2013,33(1):22-29(in Chinese).
[24]李逢兵.含锂电池和超级电容混合储能系统的控制与优化研究[D].重庆:重庆大学,2015.Li Fengbing.Control and optimization of hybrid energy storage systems containing lithium-ion batteries and super-capacitors[D].Chongqing:Chongqing University,2015(in Chinese).
[25]李欣然,徐婷婷,谭绍杰,等.超级电容储能系统动态综合等效模型[J].系统仿真学报,2016,28(04):783-792,799.Li Xinran,Xu Tingting,Tan Shaojie,et al.Integrated dynamic equivalent model of super capacitor energy storage system[J].Journal of System Simulation,2016,28(04):783-792,799(in Chinese).
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